Inflatable sofa



FIG. 1 is a front perpsective view of an inflatable sofa showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a right side elevation view thereof; the left side view is a mirror image of the left side;

FIG. 5 is a rear elevation view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for an inflatable sofa, as shown and described. 